Louis Brennan's gyroscopic monorail. It was never developed beyond the prototype stage. 1909 http://ift.tt/LKmKkV
— ClassicPics (@History_Pics) February 4, 2014
from Twitter http://ift.tt/168DZE5
February 04, 2014 at 09:54AM
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Louis Brennan's gyroscopic monorail. It was never developed beyond the prototype stage. 1909 http://ift.tt/LKmKkV
— ClassicPics (@History_Pics) February 4, 2014
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